Anonymous takes down darknet child porn site on Tor network: The hacktivist group Anonymous has targeted child pornographers who use the hidden services of the Tor network with a pair of attacks on sites, and promises more. The attacks highlight the darker side of the Tor network, which has also recently been the target of DMCA actions.

Citrix claims it will make virtual desktops cheaper than real ones: Citrix is touting new technology to make the up-front cost of virtual desktops cheaper for businesses than physical desktops within six months, while ensuring that virtual desktop performance doesn't lag too far behind traditional PCs. A new system-on-a-chip architecture is driving Citrix's prediction.

Slicing the onion: is Tor vulnerable to takeover or not?: French researchers, led by a crypto expert whose previous work has drawn criticism, say they have discovered a cryptographic backdoor that allows an attacker to "take control" of the privacy-conscious Tor network. But they haven't shared the details with the Tor Project, and their facts seem to be in dispute.

Spotted in Iran, trojan Duqu may not be "son of Stuxnet" after all: A year after the Stuxnet worm targeted industrial systems in Iran and surprised security researchers with its sophistication, a new Trojan called Duqu has spread through the wild while being called the “Son of Stuxnet." But further analyses suggest Duqu may be an entirely new malware unrelated to Stuxnet.